环境说明：

keepalived+lvs机器上配置

#1.安装keepalivedyum install keepalived –y#2.配置keepalivedglobal_defs {router_id  LVS
}
vrrp_instance LVS_1 {state MASTER    #备改为 BACKUPinterface ens33virtual_router_id 100priority 100    #备改为 90advert_int 1nopreemptauthentication {auth_type PASSauth_pass 1111}virtual_ipaddress {192.168.10.100192.168.10.101}
}virtual_server 192.168.10.100 80 {delay_loop 6lb_algo rrlb_kind DRpersistence_timeout 120protocol TCPreal_server 192.168.10.15 80 {TCP_CHECK {weight 1connect_timeout 10nb_get_retry 3delay_before_retry 3connect_port 80}}real_server 192.168.10.10 80 {TCP_CHECK {weight 1connect_timeout 10nb_get_retry 3delay_before_retry 3connect_port 80}}
}virtual_server 192.168.10.101 81 {delay_loop 6lb_algo rrlb_kind DRpersistence_timeout 0protocol TCPreal_server 192.168.10.15 81 {TCP_CHECK {weight 1connect_timeout 10nb_get_retry 3delay_before_retry 3connect_port 81}}real_server 192.168.10.10 81 {TCP_CHECK {weight 1connect_timeout 10nb_get_retry 3delay_before_retry 3connect_port 81}}
}#3.检查是否支持安装lvs
find /lib/modules/$(uname -r)/ -iname "**.ko*" | cut -d/ -f5-yum install ipvsadm –y  #yum安装lvs#4.开启转发功能
echo 1 > /proc/sys/net/ipv4/ip_forwardsysctl -p   # 重新载入sysctl变量

nginx机器配置

#1.yum安装nginx或者编译安装yum install nginx -yservice nginx start #启动nginx#2.修改nginx.conf,配置81的端口
vim /etc/nginx/nginx.confecho '192.168.10.15:80' > /usr/share/nginx/html/index.html  #设置web的标志内容#3.lvs脚本#!/bin/bash
# Script to start LVS DR real server.
# chkconfig: - 90 10
# description: LVS DR real serverVIP0=192.168.10.100
VIP1=192.168.10.101. /etc/rc.d/init.d/functionscase "$1" in
start)ifconfig lo:0 $VIP0 broadcast $VIP0 netmask 255.255.255.255 uproute add -host $VIP0 dev lo:0ifconfig lo:1 $VIP1 broadcast $VIP1 netmask 255.255.255.255 uproute add -host $VIP1 dev lo:1echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignoreecho "2" >/proc/sys/net/ipv4/conf/lo/arp_announceecho "1" >/proc/sys/net/ipv4/conf/all/arp_ignoreecho "2" >/proc/sys/net/ipv4/conf/all/arp_announcesysctl -p >/dev/null 2>&1echo "RealServer Start OK"
;;
stop)ifconfig lo:0 downroute del $VIP0 > /dev/null 2>&1ifconfig lo:1 downroute del $VIP1 > /dev/null 2>&1echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignoreecho "0" >/proc/sys/net/ipv4/conf/lo/arp_announceecho "0" >/proc/sys/net/ipv4/conf/all/arp_ignoreecho "0" >/proc/sys/net/ipv4/conf/all/arp_announceecho "RealServer Stoped"
;;
*)echo "$0: Usage:$0 {start|stop}"exit 1
;;
esac#4.添加开机自启动
hmod +x /etc/init.d/lvs-rs
chkconfig --add lvs-rs
chkconfig lvs-rs on
/etc/init.d/lvs-rs start

验证

访问VIP的网址，看是否每次访问的站点内容都是不同的。windows中的浏览器有缓存功能，如果站点内容有时候是相同的，那么不一定是自己配错了，可能是缓存的原因，避免的办法就是使用Linux的curl命令去访问站点的内容

ipvsadm -ln     #查看连接数